This chapter covers how one creates the database structures
that will hold one's data. In a relational database, the raw data
is stored in tables, so the majority of this chapter is devoted
to explaining how tables are created and modified and what
features are available to control what data is stored in the
tables. Subsequently, we discuss how tables can be organized into
schemas, and how privileges can be assigned to tables. Finally,
we will briefly look at other features that affect the data
storage, such as inheritance, views, functions, and triggers.